"I was expecting 800 people and now there are 1,200," Levin said. "It [was] a hugely successful Bitcoin conference."

Conference goers attended workshops held by Bitcoin-accepting and facilitating merchant vendors, like bitpay and 3DCart.

Michael Morgan is the Director of Customer Success for 3DCart. He says that even though U.S. dollars are used more commonly on the site now, Bitcoin use is expanding.

"Bitcoin [use] has been growing pretty rapidly," Morgan says. "As a whole, [Bitcoin] has added a little more life to the e-commerce business. ... People are crazy about Bitcoin and I expect it to get a whole lot bigger."

In addition to workshops on how to use and accept Bitcoin, the conference agenda included panels on regulation, venture capitalists, Bitcoin startups and Latin America. Additionally, conference goers could choose between presentations by more than 30 speakers.